Counterbalance for elevators



Sept. 23, 1924.

A. T. BROWN COUNTERBALANCE FOR ELEVATORS Filed Nov. 26 1921 ClamPatented Sept. 23, 1924.

UNITED STATES l,5tt9,80.3

PATENT (")FFICE.

ALFRED T. BROWN, QF CINCINNATI, OHIO, .PTSSIG I IOR TO THE WARNERELEVATOR- MANUFACTURING COMPANY, OF CINCINNATI, OHIO, A CORPORATION OFOHIO.

COUNTERBALANCE FOR. ELEVATORE Application filed November 26, 1921.

T aZZ whom it may concern.

Be it known that I, ALFRED T. BROWN,

a citizen of the United States, and residing at Cincinnati in the countyof Hamilton and State of ()hio, have invented a new and usefulImprovement in (lounterbalances for Elevators, of which the followingspecification is a "full disclosure.

My invention relates to an in'iprovei'nent 1'" in elevatorcounter-balances and guide shoes therefor. It has been customary to usecastiron weight blocks formed with marginal grooves for cooperation withthe shaft guide, the surfaces of these grooves being babbitted for asliding contact with the guides. Wl'ienever the babbitt wore, theclearance between the weight and its guide was increased and soon becameequal to the shattway clearance, and the weight dragged the Kl wall orheaders. It was difiicult and expensive to remove the blocks and toproperly rebabbitt the slide grooves.

It is an object of my invention to provide guide shoes detachablysecured to the weight blocks so that. they can be removed andrebabbitted or replaced without the expense of disassembling the weightor losing the service of the elevator for a consider able time. Theweightblocks are formed of scrap iron metal, very difficult to drill orto machine, and consequently the weight blocks cannot be economicallymachined to provide guiding means integral therewith.

It is a. further object of my invention to provide the blocks withregistering orifices cored in the castings to receive the tie-rods uponwhich the blocks are respectively strung, the top and bottom blocks of aseries being additionally provided with cored orifices to receive boltsor ties to secure the slide devices or shoes to the blocks, so that theblocks do not have to be drilled or machined. This enables the provisionof detachable slide shoes formed of material suitable for machiningoperations, and in consequence they can be provided with precisionanti-friction bearings.

This improvement has resulted in marked economy, increased efficiency ofthe counter balance travel, and in ready renewability or adjustment ofthe guide-Way bearing members.

The features of my invention are set forth in the accompanying drawings,forming a part of this specification, in which:

Serial No. 518,041.

Figure l is an elevation of the counterbalance, equipped with myimproved brackets.

Figure 2 the brackets.

Figure 3 is an end elevation of the brackct taken from. the grooved.side.

Figure 4 is a section on line e t, Fig. 2.

Figure 5 is av top plan view of the arrangement of Fig. 1, showing abracket secured to a weight block.

Figure 6 is a section taken on line 6(3, Fig. 5.

Figure 7 is a View similar to Fig. 6, showing a modified arrangement ofthe fastening devices.

The elevator shaft shown in Fig. 1 is provided with the vertical guides2, the counterbalance weight 3, formed of a series of castiron blocks 4,of less width than the distance between the vertical guides 2 and non-engaged with said guides, the bearing brackets or shoes 5, attached to theopposite end blocks of the series and to the opposite ends of each ofsaid end blocks, in order to secure these brackets or guide shoes to theblocks, the latter are cored to form registering orifices for thevertical bolt rods 6, upon which the blocks are strung in superposedrelation, the nuts 6 being provided for the rods 6, to hold the blocks 4together when the guide shoes are removed, said nuts being housed indepression 6 at the under side of the guides. The upper and lower blocksare provided with additional cored orifices at opposite ends for theshort connecting bolts of the bracket.

The brackets or guide shoes 5 are in the nature of L-posts, havingvertical orifices for securance to weight blocks, the said bracketshaving forwardly projecting portions 7, formed with hearing grooves 8,engaging the T-guides. Preferably these bolt-holding orifices 8 areelongated for adjustment in relation to the guides and blocks. Theseposts are suitably placed on the ends of the top and bottom weightblocks with their bolt orifices properly registered with thecorresponding orifices in the blocks.

In Fig. 6 the tie-rod for the blocks is shown as extended through thelap portion of the L-post, a short bolt 9 extending through the end ofthe block and through the stem portion of the post, whereas in Figure 7this relationship is transposed.

is a top plan view of one of The simplicity of this device, togetherWith its utility, results in the substantial improvement in a rapidlyWearing portion of the elevator apparatus, the expediency and shortnessof repair facility thereof being of much practical consequence.

Having described my invention, I claim:

1. A slide-Way device for an elevator counterbalance engageable with theshaft guide, comprising cast-iron Weight blocks of less Width than thedistance between the members of the shaft guide, said blocks cored withregistering orifices, said blocks being superposed, vertical bolttie-rods pass- King through said orifices, the top and bottom blocksbeing formed with additional cored orifices for bolts at opposite endportions, detachable posts formed with bolt orifices placed in registrywith the respective Weight block orifices, tierod bolts and stud boltssecuring said posts appropriately inrelation to the guide members, thestem portions of said posts having lateral pro-- jections formed withbearing grooves engageable with the said shaft guides.

2. A slide-Way device for an elevator counterbalance engageable with theshaft guide, comprising Wei ht blocks of less Width than thedistancebetween the members of the shaft guide, said Weight blocksnon-engaged With said guide, stepped brackets on the ends of the Weightblocks, tie-bolts passed through said blocks and said brackets, saidbrackets having laterally projecting portions formed with hearinggrooves engaging the guides and tic-rods passing through cored orificesin the weight block castings and also passing through and constitutingone of the holding members for said bearing brackets.

3. A counterbalance Weight comprising a series of Weight blocks, saidweight-blocks non-engaged with the shaft-gutdes, and said weight blockshaving cored orific s in registry, tie-rods connecting said blocks insuperposed arrangement, and guide shoes detachably secured to theopposite ends of" each oi the opposite end blocks oi? the series.

4:. A coiintcrbalancc Weight comprising a series of Weight blocks, saidblocks non-cm gaged with the shaft guides, the said weight blocks havingcored orifices in registry, tie rods connecting said blocks insuperposed arrangement, and guide shoes detachably secured to-theopposite ends of each of the opposite end blocks of the series and tothe opposite ends of an intermediate bleek ot the series.

In witness whereot, l hereunto subscribe my name, as attested by the twosubscribing Witnesses.

ALFRED T. BRO WN. Witnesses:

L. A. BECK, R. KIsTNER.

